* [PATCH v2 1/2] hp-wmi: Do not shadow error values
2017-04-19 17:41 [PATCH v2 0/2] hp-wmi: Fix dock status and tablet mode reporting Carlo Caione
@ 2017-04-19 17:41 ` Carlo Caione
2017-04-19 20:11 ` Darren Hart
2017-04-19 17:41 ` [PATCH v2 2/2] hp-wmi: Fix detection for dock and tablet mode Carlo Caione
1 sibling, 1 reply; 5+ messages in thread
From: Carlo Caione @ 2017-04-19 17:41 UTC (permalink / raw)
To: dvhart, andy, andy.shevchenko, platform-driver-x86, linux-kernel, linux
Cc: Carlo Caione
From: Carlo Caione <carlo@endlessm.com>
All the helper functions (i.e. hp_wmi_dock_state, hp_wmi_tablet_state,
...) using hp_wmi_perform_query to perform an HP WMI query shadow the
returned value in case of error.
We return -EINVAL only when the HP WMI query returns a positive value
(the specific error code) to not mix this up with the actual value
returned by the helper function.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
drivers/platform/x86/hp-wmi.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 96ffda4..8c7773a 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -248,7 +248,7 @@ static int hp_wmi_display_state(void)
int ret = hp_wmi_perform_query(HPWMI_DISPLAY_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
- return -EINVAL;
+ return ret < 0 ? ret : -EINVAL;
return state;
}
@@ -258,7 +258,7 @@ static int hp_wmi_hddtemp_state(void)
int ret = hp_wmi_perform_query(HPWMI_HDDTEMP_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
- return -EINVAL;
+ return ret < 0 ? ret : -EINVAL;
return state;
}
@@ -268,7 +268,7 @@ static int hp_wmi_als_state(void)
int ret = hp_wmi_perform_query(HPWMI_ALS_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
- return -EINVAL;
+ return ret < 0 ? ret : -EINVAL;
return state;
}
@@ -279,7 +279,7 @@ static int hp_wmi_dock_state(void)
sizeof(state), sizeof(state));
if (ret)
- return -EINVAL;
+ return ret < 0 ? ret : -EINVAL;
return state & 0x1;
}
@@ -290,7 +290,7 @@ static int hp_wmi_tablet_state(void)
int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, &state,
sizeof(state), sizeof(state));
if (ret)
- return ret;
+ return ret < 0 ? ret : -EINVAL;
return (state & 0x4) ? 1 : 0;
}
@@ -323,7 +323,7 @@ static int __init hp_wmi_enable_hotkeys(void)
int ret = hp_wmi_perform_query(HPWMI_BIOS_QUERY, 1, &value,
sizeof(value), 0);
if (ret)
- return -EINVAL;
+ return ret < 0 ? ret : -EINVAL;
return 0;
}
--
2.9.3
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v2 2/2] hp-wmi: Fix detection for dock and tablet mode
2017-04-19 17:41 [PATCH v2 0/2] hp-wmi: Fix dock status and tablet mode reporting Carlo Caione
2017-04-19 17:41 ` [PATCH v2 1/2] hp-wmi: Do not shadow error values Carlo Caione
@ 2017-04-19 17:41 ` Carlo Caione
1 sibling, 0 replies; 5+ messages in thread
From: Carlo Caione @ 2017-04-19 17:41 UTC (permalink / raw)
To: dvhart, andy, andy.shevchenko, platform-driver-x86, linux-kernel, linux
Cc: Carlo Caione
From: Carlo Caione <carlo@endlessm.com>
The current driver code is not checking for the error values returned by
'hp_wmi_dock_state()' and 'hp_wmi_tablet_state()' before passing the
returned values down to 'input_report_switch()'. This error code is
being translated to '1' in the input subsystem, reporting the wrong
status.
The biggest problem caused by this issue is that several laptops are
wrongly reported by the driver as docked, preventing them to be put to
sleep using the LID (and in most cases they are not even dockable).
With this patch we create the report switches only if we are able to
read the dock and tablet mode status correctly from ACPI.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
drivers/platform/x86/hp-wmi.c | 40 +++++++++++++++++++++++++++-------------
1 file changed, 27 insertions(+), 13 deletions(-)
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 8c7773a..95fab81 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -572,10 +572,12 @@ static void hp_wmi_notify(u32 value, void *context)
switch (event_id) {
case HPWMI_DOCK_EVENT:
- input_report_switch(hp_wmi_input_dev, SW_DOCK,
- hp_wmi_dock_state());
- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
- hp_wmi_tablet_state());
+ if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
input_sync(hp_wmi_input_dev);
break;
case HPWMI_PARK_HDD:
@@ -644,6 +646,7 @@ static int __init hp_wmi_input_setup(void)
{
acpi_status status;
int err;
+ int val;
hp_wmi_input_dev = input_allocate_device();
if (!hp_wmi_input_dev)
@@ -654,17 +657,26 @@ static int __init hp_wmi_input_setup(void)
hp_wmi_input_dev->id.bustype = BUS_HOST;
__set_bit(EV_SW, hp_wmi_input_dev->evbit);
- __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
- __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+
+ /* Dock */
+ val = hp_wmi_dock_state();
+ if (!(val < 0)) {
+ __set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+ input_report_switch(hp_wmi_input_dev, SW_DOCK, val);
+ }
+
+ /* Tablet mode */
+ val = hp_wmi_tablet_state();
+ if (!(val < 0)) {
+ __set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE, val);
+ }
err = sparse_keymap_setup(hp_wmi_input_dev, hp_wmi_keymap, NULL);
if (err)
goto err_free_dev;
/* Set initial hardware state */
- input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
- hp_wmi_tablet_state());
input_sync(hp_wmi_input_dev);
if (!hp_wmi_bios_2009_later() && hp_wmi_bios_2008_later())
@@ -950,10 +962,12 @@ static int hp_wmi_resume_handler(struct device *device)
* changed.
*/
if (hp_wmi_input_dev) {
- input_report_switch(hp_wmi_input_dev, SW_DOCK,
- hp_wmi_dock_state());
- input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
- hp_wmi_tablet_state());
+ if (test_bit(SW_DOCK, hp_wmi_input_dev->swbit))
+ input_report_switch(hp_wmi_input_dev, SW_DOCK,
+ hp_wmi_dock_state());
+ if (test_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit))
+ input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+ hp_wmi_tablet_state());
input_sync(hp_wmi_input_dev);
}
--
2.9.3
^ permalink raw reply related [flat|nested] 5+ messages in thread